Marin Mersenne 2^P-1
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Finding World Record Primes Since 1996

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MnStatusDetails
2787859Composite, with 5 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
646783289929.3old
62225012891032.52008-09-07 19:41:48
201002571124321356035932374.12023-01-19 00:20:16
231485777278631153257132374.32024-09-27 19:33:04
4954884575188359579885612478.72024-12-05 14:26:51
ECM
DigitsB1Curves
2550000111 / 280
Estimated T-Level: 22.0 ⓘ
TF below 2^68 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-10-21Oliver Kruse19D3DF5F10C931882180396053
Verified (Factored)2017-12-06kkmrkkblmbrbk19D3DF5F10C93188233400753
Verified (Factored)2023-01-22LordJulius19D3DF5F10C931883235944153
Verified (Factored)2024-09-27MarkS19D3DF5F10C931884231261453
Verified2024-12-05Naegi Makoto19D3DF5F10C931885248082953
P-1 factors
DateFactorB1B2
2023-01-1920100257112432135603593330000261254070
History
DateUserTypeResult
2024-12-05XyzzyCERT
PRP Certification
Proof certified good
2024-12-05Naegi MakotoC-PRP
M2787859/646783289/6222501289/20100257112432135603593/23148577727863115325713/495488457518835957988561 : 19D3DF5F10C93188
PRP proof power = 7
PRP: Verified
Proof certified good
2024-12-05Naegi MakotoF-ECM
Factor: 495488457518835957988561 / (ECM curve 30, B1=50000, B2=60054225, Edwards Sigma=6843130893520009)
2024-09-27Johannes NCERT
PRP Certification
Proof certified good
2024-09-27MarkSC-PRP
M2787859/646783289/6222501289/20100257112432135603593/23148577727863115325713 : 19D3DF5F10C93188
PRP proof power = 7
PRP: Verified (Factored)
Proof certified good
2024-09-27MarkSF-ECM
Factor: 23148577727863115325713 / (ECM curve 6, B1=50000, B2=60054225, Edwards Sigma=4241074807478961)
2023-01-23curtiscCERT
PRP Certification
Proof certified good
2023-01-22LordJuliusC-PRP
M2787859/646783289/6222501289/20100257112432135603593 : 19D3DF5F10C93188
PRP proof power = 7
PRP: Verified (Factored)
Proof certified good
2023-01-19USAFSSF-PM1
Factor: 20100257112432135603593 / (P-1, B1=330000, B2=261254070)
2017-12-06kkmrkkblmbrbkC-PRP
M2787859/646783289/6222501289 : 19D3DF5F10C93188
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-21Oliver KruseC-PRP
M2787859/646783289/6222501289 : 19D3DF5F10C93188
PRP: Verified (Factored)
PRP without proof (not generated)
2008-09-07Will EdgingtonF
Factor: 6222501289